摘要
通过CATIA平台对董箐水电站溢洪道三斜支臂弧形工作闸门进行三维线弹性有限元分析，计算弧形闸门在正常挡水工况下的静应力、位移和稳定性，以及闸门在自由状态下的动态特性，得出了以下结论：正常挡水工况下闸门受力较小；各阶模态的屈曲系数均远大于1，稳定性很好，支臂的稳定性相对而言是薄弱环节；闸门在自由状态下，1～10阶振动的频率在0～5Hz范围内，闸门的上支臂抗震性能相对较弱。
The three - inclined ann - supporting radial gate of Dongqing three -dimensional finite element method by using software of CATIA, hydropower station spillway is analyzed with by calculating static stress,displacement, stability of radial gate at condition of bearing water at normal lever and dynamic characteristics at condition of free- dom, following conclusions are got： gate stress is small at condition of bearing water at normal level; buckling coef- ficient of every mode is far bigger than 1, the stability is very good but the supporting arm is comparably weak; vi- bration frequency of 1 to 10 mode is in range of 0 to 5 Hz under freedom condition, the seismic performance of upper supporting arm is comparable weak.
关键词
弧形闸门
有限元法
静应力
稳定性
自由振动频率
radial gate
finite element method
static stress
stability
free vibration frequency
